Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 52 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
2. 2.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) at the very bottom (b) in the water layer (c) on top of the oil (d) in the oil layer
3. 3.📘 What does “dense” mean? (a) very hot (b) very colourful (c) very thin (d) heavy for its size
4. 4.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) water from the oars (d) the rowing boat
5. 5.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) do not lick the spoon (c) pour it on the floor (d) throw the glass
6. 6.🧺 Do we need cling film for the water cycle bowl? (a) needed (b) not needed
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) time for colour to show (c) the length of the stem (d) the room it stands in
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the time of day (b) the same glass (c) the amount of water (d) the same window
9. 9.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is magnetic (c) hot water is heavy (d) it changes colour
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a bicycle pump (d) a magnetic chess set
12. 12.🛟 Does a cork float or sink in water? (a) floats (b) sinks
13. 13.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the water turns to ice (d) the card stays on
14. 14.True or false: an ice cube sinks in water. (a) False (b) True
15. 15.🍯 Which of these is denser than water? (a) cooking oil (b) a cork (c) a coin (d) an ice cube
16. 16.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a comb (b) sugar (c) two clear glasses (d) cold water
18. 18.🔍 Which is the odd one out? (a) very salty water (b) a ping-pong ball (c) a pebble (d) honey
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
20. 20.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) oil makes it rain (d) spilled oil is slippery
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
22. 22.True or false: a feather floats on water. (a) False (b) True
23. 23.True or false: sugar in icy water dissolves faster. (a) False (b) True
24. 24.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) sticky tape (c) yeast (d) two chairs
25. 25.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) False (b) True
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the kind of flower (c) the length of the stem
27. 27.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is what we measure. (a) True (b) False
29. 29.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the slope of the string (b) the same tape (c) how big we blow it (d) the same straw
31. 31.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
32. 32.🌈 How many colours do we name in a rainbow (VIBGYOR)?
33. 33.🔍 Which is the odd one out? (a) a feather (b) a toy parachute (c) a coin (d) a paper helicopter
34. 34.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
35. 35.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the densest (c) it is the stickiest (d) it is the coldest
36. 36.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
37. 37.🚀 Which of these goes backward? (a) air from the balloon (b) the rowing boat (c) the balloon (d) the swimmer
38. 38.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) gardening shears (d) safety scissors
39. 39.🥄 Which of these dissolves slower? (a) sugar stirred well (b) sugar in warm water (c) powdered sugar (d) sugar in icy water
40. 40.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks

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